Live Messenger 2011 which came up the recent live essentials suite has bring some great features like full support for facebook chat, that means you can chat with your facebook friends directly from live messenger.
You will need to connect live messenger 2011 one time with facebook account then you will be able to chat with your facebook friends. But just in case you are not in mood to chat with your facebook friends you can easily hide all the facebook friends in live messenger and deactivate the facebook chat.
Follow the procedure below to know how to do it
1. Login to live messenger with your live id
2. Now on live messenger window, click on your name drop down and uncheck facebook chat option to disable messenger show facebook friends and disable the facebook chat instantly as shown in the image below.
This is how you can quickly disable or enable facebook chat in live messenger 2011